iOS custom dialog box

I'm working on an iPhone app in which I'm trying to create a card which will be shown on top of a view and when a touch event happens outside its boundaries, the card needs to be closed. What is the best way of doing it. The card will have a custom background image, a UIWebview(which c开发者_JAVA百科ontains a question) and 2 buttons - yes and no.

Any suggestion is highly appreciated. Thanks in advance.

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You can take a look at TSAlertView. It's a replacement for UIAlertView.

You may inspire yourself from that example to make one yourself with your specifications.